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Picosecond dynamics of laser-induced strain in graphite

Harb, Maher LU ; Jurgilaitis, Andrius LU ; Enquist, Henrik LU ; Nüske, Ralf LU ; Schmising, C. v. Korff; Gaudin, J.; Johnson, S. L.; Milne, C. J.; Beaud, P. and Vorobeva, E., et al. (2011) In Physical Review B (Condensed Matter and Materials Physics) 84(4).
Abstract
We report on the use of grazing-incidence time-resolved x-ray diffraction to investigate the evolution of strain in natural graphite excited by femtosecond-laser pulses in the fluence range of 6-35 mJ/cm(2). Strains corresponding to up to similar to 2.8% c-axis expansion were observed. We show that the experimental data is in good agreement with calculations based on the Thomsen strain model in conjunction with dynamical diffraction theory. Furthermore we find no evidence of nonthermal lattice expansion as reported in recent ultrafast electron-diffraction studies of laser-excited graphite conducted under comparable excitation conditions.
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Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
84
issue
4
publisher
American Physical Society
external identifiers
  • wos:000292825100015
  • scopus:79961205324
ISSN
1098-0121
DOI
10.1103/PhysRevB.84.045435
language
English
LU publication?
yes
id
34bacc3f-deff-4350-8be6-850630b59a4c (old id 2093923)
date added to LUP
2011-08-25 12:30:36
date last changed
2017-07-23 03:59:47
@article{34bacc3f-deff-4350-8be6-850630b59a4c,
  abstract     = {We report on the use of grazing-incidence time-resolved x-ray diffraction to investigate the evolution of strain in natural graphite excited by femtosecond-laser pulses in the fluence range of 6-35 mJ/cm(2). Strains corresponding to up to similar to 2.8% c-axis expansion were observed. We show that the experimental data is in good agreement with calculations based on the Thomsen strain model in conjunction with dynamical diffraction theory. Furthermore we find no evidence of nonthermal lattice expansion as reported in recent ultrafast electron-diffraction studies of laser-excited graphite conducted under comparable excitation conditions.},
  articleno    = {045435},
  author       = {Harb, Maher and Jurgilaitis, Andrius and Enquist, Henrik and Nüske, Ralf and Schmising, C. v. Korff and Gaudin, J. and Johnson, S. L. and Milne, C. J. and Beaud, P. and Vorobeva, E. and Caviezel, A. and Mariager, S. O. and Ingold, G. and Larsson, Jörgen},
  issn         = {1098-0121},
  language     = {eng},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Picosecond dynamics of laser-induced strain in graphite},
  url          = {http://dx.doi.org/10.1103/PhysRevB.84.045435},
  volume       = {84},
  year         = {2011},
}